Calking compound



Patented Nov. 21, 1944 UNITED CALKING COIHPOUND Duane H. Tollstrnp, LosAngels, Calif.

No Drawing. Application July 26, 19r1,

Serial m. amass 1 Claim. (on. its-282) My invention relates to calkingcompounds such as are used for the callring of joints and the instantinvention is the provision of a calking compound that can bemanufactured, installed and maintained with a maximum of economy, speedand simplicity. Other objects and advantages manifest themselves in thisspecification.

The instant invention is characterized particularly by the incorporationof a substance hereto- 7 fore not used in calking compounds, namely,

bentonite, which is used. togetherwith fibrous material and with orwithout a hydrocarbon oil to produce an article that differs from and isbetter than any compound now used, in that it is more waterresistantunder pressures, more eflicient, cheaper to manufacture, and ifused in conjunction with lead, which is a common practice, the amount oflead can be reduced to a Great extent. It also diifers from compoundsused at present in that the variety of oils or oil compounds that can beused with practically the same results, is extensive, such is asphaltbase road oil, mixtures of tar and oil, or paramne mixed with oil, coaltar and any fuel oil, crude oil, or even used crank case oil, it beingunderstood that the term, oil, herein refers to any of the foregoing andto any entirely or partly oleaginous and entirely or partly mineralsubstance.

A satisfactory example of-my invention or discovery is as follows: Forexample, to thirty-seven per cent, by weight, fiber, such as hemp. lute,discarded burlap, old rope, etc., and thirty-three per cent by weight,oil and thirty per cent, by weight, of a chemical, known as bentonite.

The bentonite may be employed in several different ways with similarresults, as follows:

- (1) Powdered bentonite may be dusted into loose, dry fibers and thenimpregnated with oil.

(2) Bentonite may be mixed with oil and dry fibers dipped into, theaforementioned oil and bentonite mixture.

(ii) Bentonite may be dusted into fibrous material after it has beenimpregnated withoil.

(4) Bentonite may be dusted into the fibers or without the use of oiland the resulting product used as a packing for certain types of work.

Tests I have made, using my composition in all kinds of packed and screwjoints have proven that my composition will withstand approximately twohundredper cent (200%) more pressure per square inch without leakingthan any of the compounds used at present. These tests disclosed thatthis composition could and did withstand constant pressure in theaforementioned amount for a period of sixty (60) days.

A salient characteristic of bentonite, which makes it valuable is thatit does not absorb the oil, but when water comes in contact with themixture of oil and bentonite, the bentonite leaves the oil and issaturated with the water, causing the bentonite to swell.

While I have fully described my invention or discovery as set forthabove, I do not wish to limit myself to 'the exact quantities asspecified or to the various methods of application set forth because theuse of bentonite and fiber as the main or essential elements in acalking comthirty-seven percent; from the group consisting of asphaltic,coal tar and mineral oil, thirty-' three percent.

DUANE n. 'rous'mur.

